System. Guid ToString 5 in the format of guidtostring

System. Guid ToString 5 in the format of guidtostring

Reference: https://msdn.microsoft.com/en-us/library/97af8hh4.aspx

Test code:

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace GuidToString{    class Program    {        static void Main(string[] args)        {            Console.WriteLine(" -->" + System.Guid.NewGuid().ToString());            Console.WriteLine("N-->" + System.Guid.NewGuid().ToString("N"));            Console.WriteLine("D-->" + System.Guid.NewGuid().ToString("D"));            Console.WriteLine("B-->" + System.Guid.NewGuid().ToString("B"));            Console.WriteLine("P-->" + System.Guid.NewGuid().ToString("P"));            Console.WriteLine("X-->" + System.Guid.NewGuid().ToString("X"));            Console.ReadKey();        }    }}

Test results:

Note: Only N, D, B, P, and X (case-insensitive) are allowed. Exceptions may occur when other letters are used.

The format string can only be "D", "d", "N", "n", "P", "p", "B", "B", "X", or "x ".

Exception:

The following operations are normal:

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace GuidToString{    class Program    {        static void Main(string[] args)        {            Console.WriteLine(" -->" + System.Guid.NewGuid().ToString());            Console.WriteLine(" -->" + System.Guid.NewGuid().ToString(""));            Console.WriteLine("N-->" + System.Guid.NewGuid().ToString("N"));            Console.WriteLine("n-->" + System.Guid.NewGuid().ToString("n"));            Console.WriteLine("D-->" + System.Guid.NewGuid().ToString("D"));            Console.WriteLine("d-->" + System.Guid.NewGuid().ToString("d"));            Console.WriteLine("B-->" + System.Guid.NewGuid().ToString("B"));            Console.WriteLine("b-->" + System.Guid.NewGuid().ToString("b"));            Console.WriteLine("P-->" + System.Guid.NewGuid().ToString("P"));            Console.WriteLine("p-->" + System.Guid.NewGuid().ToString("p"));            Console.WriteLine("X-->" + System.Guid.NewGuid().ToString("X"));            Console.WriteLine("x-->" + System.Guid.NewGuid().ToString("x"));            Console.ReadKey();        }    }}